Capitalization...?

Is there a set rule to capitalizing certain words in any given title (such as a book)? For example:

“The Lion, the Witch, and the Wardrobe”

In that title, one doesn’t capitalize ‘the’ or ‘and’ (not counting the first). Which words should you NOT capitalize in a title? I once asked my English teacher, and she told me to capitalize the “little” words. o__o Can someone clarify that for me...?

For instance, a song:

“Here With You”

Would ‘with’ be capitalized or not? I consider that to be a relatively ‘small’ word...

Comments

I'm sure we've discussed this before. If a word is a preposition, it is not capitalized, e.g. Here with You. A preposition is usually a small word that prefaces a noun and locates it spatially, temporally or logically, e.g. of, to, in, on, out, with, over etc.